Piezo motors are linear or rotary motors offering high precision and blocking at rest. These properties make them suitable for long stroke micro positioning applications.
CEDRAT TECHNOLOGIES has experimented different kinds of piezoelectric motors either by retrofitting / testing standard piezomotors or by developing new original concepts, in the context of space applications or fine instrumentation projects:
The following examples show various prototypes and customised products. To learn more about our piezo motors see our related publications on rotating piezo motors or on linear piezo motors. A developer kit based on the SPA30uXS is also available.
The Tripod Actuator by Cedrat Technologies (TrAC) is a 3 dof mechanism offering +/-35° rotation around X and Y axis and a 10mm Z translation stroke into a low volume of Ø50x50mm.
Nano positioning, Locking, Refocusing, Piezo Valves, Micro Robots ...
The Stepping Piezo Actuator SPA30uXS is a new high-force density non-magnetic stepping linear micro piezomotor : Mass < 1gr ; Blocking force at rest > 0.5N ; Max actuation force > 0.2N ; Stroke > 3mm ; Speed > 50mm/s ; Resolution < 1nm
Embedded microsystems, cameras, MRI-compatible, microvalves, medical implant
FSPAs are new long stroke linear stepping piezo actuators for Nano positioning applications. FSPA offers much higher forces than SPA, but much lower speed.
Micro/Nano positioning, Locking mechanism...
RPA is a Resonant Ultrasonic Rotary Piezoelectric Motor developed for space applications (robotic arm joint, instrument motorisation).
Aerospace, robot arm, High positioning accuracy...
CEDRAT TECHNOLOGIES has upgraded commercial off the shelf – COTS rotative piezoelectric motors by changing several parts and carrying out acceptance tests. For ex TWUM motors have been made space compatible.
Aerospace, defence, non-magnetism instruments
RPMHPP is a Quasi-static stepping Rotary Piezoelectric Motor for space telescope applications. It displays the general advantages of a piezo motor, but an extremely high angular resolution and a wide temperature range.
Aerospace, High angular Precision Positioning, telescope...
LPM20-3 is an Ultrasonic Linear Piezoelectric Motor developed for space applications with CNES support. It offers high forces (20-50N) and speed (20mm/s) with very low electric power (12W).
Aerospace, Refocusing, High positioning accuracy...